Permission::compareRole

static function compareRole(string $userRole, string $needRole): bool
{
	if ($needRole === Chat::ROLE_NONE)
	{
		return false;
	}

	$ascendingRoles = [Chat::ROLE_GUEST, Chat::ROLE_MEMBER, Chat::ROLE_MANAGER, Chat::ROLE_OWNER];
	$userRolePos = array_search($userRole, $ascendingRoles, true);
	$needRolePos = array_search($needRole, $ascendingRoles, true);

	if ($userRole === false || $needRolePos === false)
	{
		return false;
	}

	return $userRolePos >= $needRolePos;
}